dcaegen2 vescollector seedcode

Initial seed code delivery for vescollector for support
on the gen2dcae platform

Issue-ID: DCAEGEN2-52
Change-Id: Id2477eb266f05caf64c67dd809b1ad146ff4fb92
Signed-off-by: VENKATESH KUMAR <vv770d@att.com>

1 files changed, 192 insertions, 0 deletions

diff --git a/src/main/java/org/onap/dcae/commonFunction/EventProcessor.java b/src/main/java/org/onap/dcae/commonFunction/EventProcessor.java
new file mode 100644
index 00000000..4cdba066
--- /dev/null
+++ b/src/main/java/org/onap/dcae/commonFunction/EventProcessor.java
@@ -0,0 +1,192 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * PROJECT
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.dcae.commonFunction;
+
+import java.io.FileReader;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.text.SimpleDateFormat;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.att.nsa.clock.SaClock;
+import com.att.nsa.logging.LoggingContext;
+import com.att.nsa.logging.log4j.EcompFields;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonParser;
+
+import java.util.Arrays;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.TimeZone;
+import java.util.UUID;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+public class EventProcessor implements Runnable {
+	private static final Logger log = LoggerFactory.getLogger(EventProcessor.class);
+
+	private static HashMap<String, String[]> streamid_hash = new HashMap<String, String[]>();
+	private JSONObject event = null;
+
+	public EventProcessor() {
+		log.debug("EventProcessor: Default Constructor");
+		
+		String list[] = CommonStartup.streamid.split("\\|");
+		for (int i = 0; i < list.length; i++) {
+			String domain = list[i].split("=")[0];
+			//String streamIdList[] = list[i].split("=")[1].split(",");
+			String streamIdList[] = list[i].substring(list[i].indexOf("=") +1).split(",");
+			
+			log.debug("Domain: " + domain + " streamIdList:" + Arrays.toString(streamIdList));
+			streamid_hash.put(domain, streamIdList);
+		}
+		
+	}
+
+	@Override
+	public void run() {
+
+		try {
+			
+			event = CommonStartup.fProcessingInputQueue.take();
+			log.info("EventProcessor\tRemoving element: " + event);
+			
+			//EventPublisher Ep=new EventPublisher();
+			while (event != null) {
+				// As long as the producer is running we remove elements from the queue.
+
+				//UUID uuid = UUID.fromString(event.get("VESuniqueId").toString());
+				String uuid = event.get("VESuniqueId").toString();
+				LoggingContext localLC = VESLogger.getLoggingContextForThread(uuid.toString());
+				localLC .put ( EcompFields.kBeginTimestampMs, SaClock.now () );
+				
+				log.debug("event.VESuniqueId" + event.get("VESuniqueId") + "event.commonEventHeader.domain:" + event.getJSONObject("event").getJSONObject("commonEventHeader").getString("domain"));
+				String streamIdList[]=streamid_hash.get(event.getJSONObject("event").getJSONObject("commonEventHeader").getString("domain"));
+				log.debug("streamIdList:" + streamIdList);
+				
+				if (streamIdList.length == 0)		{
+					log.error("No StreamID defined for publish - Message dropped" + event.toString());
+				} 
+				
+				else {
+					for (int i=0; i < streamIdList.length; i++)
+					{
+						log.info("Invoking publisher for streamId:" + streamIdList[i]);
+						this.overrideEvent();
+						EventPublisher.getInstance(streamIdList[i]).sendEvent(event);
+						
+					}
+				}
+				log.debug("Message published" + event.toString());
+				event = CommonStartup.fProcessingInputQueue.take();
+				// log.info("EventProcessor\tRemoving element: " + this.queue.remove());
+			}
+		} catch (InterruptedException e) {
+			log.error("EventProcessor InterruptedException" + e.getMessage());
+		}
+
+	}
+
+	
+	@SuppressWarnings({ "unchecked", "rawtypes" })
+	public void overrideEvent()
+	{
+		//Set collector timestamp in event payload before publish
+		final Date currentTime = new Date();
+		final SimpleDateFormat sdf =   new SimpleDateFormat("EEE, MM dd yyyy hh:mm:ss z"); 
+		sdf.setTimeZone(TimeZone.getTimeZone("GMT"));
+		
+		/*JSONArray additionalParametersarray = new JSONArray().put(new JSONObject().put("collectorTimeStamp", sdf.format(currentTime)));
+		JSONObject additionalParameter = new JSONObject().put("additionalParameters",additionalParametersarray );
+		JSONObject commonEventHeaderkey = event.getJSONObject("event").getJSONObject("commonEventHeader");
+		commonEventHeaderkey.put("internalHeaderFields", additionalParameter);*/
+		
+
+/*		  "event": {
+            "commonEventHeader": {
+            ….
+                            "internalHeaderFields": {
+                                            "collectorTimeStamp": "Fri, 04 21 2017 04:11:52 GMT"
+                            },
+*/
+		
+		//JSONArray additionalParametersarray = new JSONArray().put(new JSONObject().put("collectorTimeStamp", sdf.format(currentTime)));
+		JSONObject collectorTimeStamp = new JSONObject().put("collectorTimeStamp",sdf.format(currentTime) );
+		JSONObject commonEventHeaderkey = event.getJSONObject("event").getJSONObject("commonEventHeader");
+		commonEventHeaderkey.put("internalHeaderFields", collectorTimeStamp);
+		event.getJSONObject("event").put("commonEventHeader",commonEventHeaderkey);	
+		
+		if (CommonStartup.eventTransformFlag == 1)
+		{
+				// read the mapping json file
+				final JsonParser parser = new JsonParser();
+				try {
+					final JsonArray jo =  (JsonArray) parser.parse ( new FileReader ( "./etc/eventTransform.json" ) );
+					log.info("parse eventTransform.json");
+					// now convert to org.json
+					final String jsonText = jo.toString ();
+					final JSONArray topLevel = new JSONArray ( jsonText );
+					//log.info("topLevel == " + topLevel);
+					
+					Class[] paramJSONObject = new Class[1];
+					paramJSONObject[0] = JSONObject.class;
+					//load VESProcessors class at runtime
+					Class cls = Class.forName("org.onap.dcae.commonFunction.ConfigProcessors");
+					Constructor constr = cls.getConstructor(paramJSONObject);
+					Object obj = constr.newInstance(event);
+						
+					for (int j=0; j<topLevel.length(); j++)
+					{
+						JSONObject filterObj = topLevel.getJSONObject(j).getJSONObject("filter");
+						Method method = cls.getDeclaredMethod("isFilterMet", paramJSONObject);
+						boolean filterMet = (boolean) method.invoke (obj, filterObj );
+						if (filterMet)
+						{
+							final JSONArray processors = (JSONArray)topLevel.getJSONObject(j).getJSONArray("processors");
+						
+							//call the processor method
+							for (int i=0; i < processors.length(); i++)
+							{
+								final JSONObject processorList = processors.getJSONObject(i);
+								final String functionName = processorList.getString("functionName");
+								final JSONObject args = processorList.getJSONObject("args");
+								//final JSONObject filter = processorList.getJSONObject("filter");
+							
+								log.info("functionName==" + functionName + " | args==" + args);
+								//reflect method call
+								method = cls.getDeclaredMethod(functionName, paramJSONObject);
+								method.invoke(obj, args);
+							}
+						}
+					}
+					
+				} catch (Exception e) {
+					
+					log.error("EventProcessor Exception" + e.getMessage() + e);
+					log.error("EventProcessor Exception" + e.getCause());
+				} 
+		}	
+		log.debug("Modified event:" + event);
+		
+	}
+}